/*
 * Copyright (c) 2004-2022, University of Oslo
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * Redistributions of source code must retain the above copyright notice, this
 * list of conditions and the following disclaimer.
 *
 * Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 * Neither the name of the HISP project nor the names of its contributors may
 * be used to endorse or promote products derived from this software without
 * specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package org.hisp.dhis.program;

import java.util.Set;
import lombok.RequiredArgsConstructor;
import org.hisp.dhis.dataentryform.DataEntryForm;
import org.hisp.dhis.dataentryform.DataEntryFormService;
import org.hisp.dhis.system.deletion.DeletionHandler;
import org.springframework.stereotype.Component;

/**
 * @author Chau Thu Tran
 */
@RequiredArgsConstructor
@Component
public class ProgramDataEntryFormDeletionHandler extends DeletionHandler {
  private final DataEntryFormService dataEntryFormService;

  private final ProgramStageService programStageService;

  @Override
  protected void register() {
    whenDeleting(ProgramStage.class, this::deleteProgramStage);
  }

  public void deleteProgramStage(ProgramStage programStage) {
    DataEntryForm dataEntryForm = programStage.getDataEntryForm();

    if (dataEntryForm != null) {
      boolean flag = false;

      Set<ProgramStage> programStages = programStage.getProgram().getProgramStages();

      programStages.remove(programStage);

      for (ProgramStage stage : programStages) {
        if (stage.getDataEntryForm() != null) {
          programStage.setDataEntryForm(null);
          programStageService.updateProgramStage(programStage);
          flag = true;
          break;
        }
      }

      if (!flag) {
        dataEntryFormService.deleteDataEntryForm(dataEntryForm);
      }
    }
  }
}
